Quote Originally Posted by quadalpha View Post
Does upgrading the stations improve the transportation functionality, by the way?
I did some low-tech testing of this, and I can say that National Rail Company does not seem to speed up transport times (or if it does, the difference is so small as to be unnoticeable). I had a single province maxed out as my unit production center, and was moving upgraded troops up and down the lines. Upgraded all of my stations to National in an attempt to speed things up.

No change. A trip that required three turns still took three turns. Troops entering the rail system cold exited with what seemed to be the exact same remaining movement allowance.

I think the upgrade to National is purely economic.